I have a 2011 crown Vic. I’m getting no fire signal to the injectors on bank 1. It has constant power on all of them, I have spark, the pcm is just not sending the signal. It will start and idle surprisingly well on just bank 2. I checked all the wiring from the injectors to the pcm, all looks good. Is there anything else I should check that would make just bank one to not fire ? Or am I safe to say I need a new pcm ? The codes I’m getting are p0201 p0202 p0203 p0204 and p0453 Thanks in advanced

 

If,,,,,,,,, you confirmed there is NO GROUND signal getting to the 4 injectors on bank 1 , and the wiring from the PCM to the 4 injectors is good , then I would consider a PCM.

Don't forget, the replacement PCM has to be programmed to your particular vehicle. Any facility with the info and capability can program the replacement PCM. The vehicle may not even start unless the PCM is programmed. They will need the VIN to do this. They can copy the info from your old PCM or get the info from MFG OEM site.
Check with a local dealership service dept or a shop that can do reprogramming.

If any attempt is made to start the vehicle with an un programmed PCM, then the original PCM is reconnected , the vehicle will no longer start then either.